Sunday 19 September

How it was decided

1. 01

   Aṅga

   Aṣṭamī runs from 10:42 on Sun 19 Sep to 13:09 on Mon 20 Sep.

   1920-09-19T15:42:06Z → 1920-09-20T18:09:03Z

2. 02

   Kāla

   Madhyāhna is 1 ghaṭikā either side of midday: 11:36–12:24 on the 19th, 11:35–12:23 on the 20th.

   madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

3. 03

   Rule

   Aṣṭamī must be present during madhyāhna. It covers 48 of 48 minutes on the 19th and 48 of 48 on the 20th.

   Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103

4. 04

   Tie-break

   Both middays qualify and the rule marks neither. The one covered longer is ruled, as a boundary.

   priority: unstated → greater-coverage · margin 2736 s

5. 05

   Ruling

   Rādhāṣṭamī, Cali, 1920: Sunday 19 September.

   confidence: boundary (tie-break-unstated)

Say it like this

In Cali, Rādhāṣṭamī 1920 falls on Sunday 19 September. Aṣṭamī runs from 10:42 on Sun 19 Sep to 13:09 on Mon 20 Sep and covers all of madhyāhna that midday. It also reaches the next midday for 48 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.

Copy with citation

Who says what

Institutional rulings are recorded with a source address, and are never edited to agree.